68         variant<int> v;  in main()
71         variant<int> v2( 1 );  in main()
76         variant<int> const v3( 2 );  in main()
83         variant<int, float> v;  in main()
87         variant<int, float> v2( 1 );  in main()
93         variant<int, float> v3( 3.14f );  in main()
99         variant<int, float> const v4( 3.15f );  in main()
107         variant<int, int, float, std::string> v;  in main()
111         variant<int, int, float, std::string> v2( in_place_index_t<1>{}, 1 );  in main()
117         variant<int, int, float, std::string> v3( 3.14f );  in main()
123         variant<int, int, float, std::string> const v4( 3.15f );  in main()
129         variant<int, int, float, std::string> v5( "s1" );  in main()
135         variant<int, int, float, std::string> const v6( "s2" );  in main()
143         variant<X1, X2> v;  in main()
147         variant<X1, X2> v2( X1{1} );  in main()
153         variant<X1, X2> v3( in_place_index_t<1>{}, 2 );  in main()
159         variant<X1, X2> const v4( in_place_index_t<1>{}, 3 );  in main()
165         variant<X1, X2> const v5( in_place_index_t<0>{}, 4 );  in main()
173         BOOST_TEST_TRAIT_TRUE((std::is_nothrow_copy_assignable<variant<int>>));  in main()
174         BOOST_TEST_TRAIT_TRUE((std::is_nothrow_copy_assignable<variant<int, int>>));  in main()
175         BOOST_TEST_TRAIT_TRUE((std::is_nothrow_copy_assignable<variant<int, float>>));  in main()
176         BOOST_TEST_TRAIT_TRUE((std::is_nothrow_copy_assignable<variant<int, int, float, float>>));  in main()
178         BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_assignable<variant<X1>>));  in main()
179         BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_assignable<variant<X1, int>>));  in main()
180         BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_assignable<variant<X1, int, float>>));  in main()
182         BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_assignable<variant<int, X1>>));  in main()
183         BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_assignable<variant<int, int, X1>>));  in main()
185         BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_assignable<variant<X1, X2>>));  in main()
186         BOOST_TEST_TRAIT_FALSE((std::is_nothrow_copy_assignable<variant<X1, X2, int, int>>));  in main()
188         BOOST_TEST_TRAIT_TRUE((std::is_copy_assignable<variant<X1, X2>>));  in main()
189         BOOST_TEST_TRAIT_FALSE((std::is_copy_assignable<variant<int const>>));  in main()
190         BOOST_TEST_TRAIT_FALSE((std::is_copy_assignable<variant<int, float, Y>>));  in main()